Bump linuxbrew/Homebrew from `45ddf77` to `4a20f76`
Bump linuxbrew/Homebrew from `45ddf77` to `4a20f76`

Bumps [linuxbrew/Homebrew](https://github.com/Homebrew/brew) from `45ddf77` to `4a20f76`.
- [Release notes](https://github.com/Homebrew/brew/releases)
- [Commits](https://github.com/Homebrew/brew/compare/45ddf773ff088e7d68f59d4fe2a763631ccab25a...4a20f76382e3901301c338b9da9b220932e5aaf5)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
doot/dotfiles,doot/dotfiles